Richard Dunn found himself stuck at Las Vegas overnight - but instead of being grumpy about it, he put his solitude to good use.

The resulting video - in which he lip syncs to Celine Dion's version of 'All By Myself' - is a thing of joy (tinged with sadness). Click play above to enjoy Dunn riding escalators and travelators, leaning on sculptures, hanging outside the women's toilet and much, much more... all by himself.